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onsemi 1N5351BRLG
- Part No.:
- 1N5351BRLG
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5351BRLG.pdf
- Description:
- DIODE ZENER 14V 5W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:11,086
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Product details
Overview
1N5351BRLG from onsemi is a 5 W axial-lead Zener diode with nominal zener voltage of 14.0 V, ±5% tolerance, maximum zener impedance of 100 Ω at 2.5 mA test current, and surge rating of 180 W for 8.3 ms. It operates across −65 °C to +200 °C and delivers stable voltage regulation in power supply reference and overvoltage protection circuits.
For engineers reviewing the 1N5351BRLG datasheet, pinout, applications, or equivalent options, this device serves as a precision DC voltage reference in low-power linear regulators, analog sensor biasing networks, and transient-suppression clamps where tight voltage tolerance and high surge resilience are required.
Technical Context
The 1N5351BRLG employs a silicon-oxide passivated junction for enhanced stability and low leakage. Its zener voltage is specified at IZT = 2.5 mA with regulation tested at 10% and 50% of IZM, ensuring consistent performance under varying load conditions.
Thermal design relies on junction-to-lead resistance (θJL = 25 °C/W) and lead-length-dependent derating; maximum steady-state power dissipation is 5 W at TL = 25 °C with 40 mW/°C derating above that temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 13.3 V (min) to 14.7 V (max) at IZT = 2.5 mA - defines regulated output range under nominal bias |
| Power Dissipation (PD) | 5 W max at TL = 25 °C - sets absolute thermal limit for continuous DC operation |
| Zener Impedance (ZZT) | 100 Ω max at IZT = 2.5 mA - determines regulation stiffness against load current variation |
| Surge Current (IR) | 180 W peak for 8.3 ms - enables robust transient suppression without failure |
| Leakage Current (IR) | 0.25 mA max at VR = 10.6 V - ensures minimal standby power loss in high-impedance bias networks |
| Operating Temperature | −65 °C to +200 °C - supports deployment in automotive engine compartments and industrial control enclosures |
| ESD Rating | Class 3 (>16 kV HBM) - eliminates need for external ESD protection in board-level handling |
Pinout & Package
Package: Axial-lead, transfer-molded plastic (Case 017AA), cathode indicated by band. Dimensions: body length 8.38–8.89 mm, diameter 3.30–3.68 mm, lead length ≥25.4 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference node | Connected to circuit ground or lower-potential rail; reverse-biased configuration places cathode at regulated voltage |
| Cathode | Zener breakdown terminal / regulated output node | Provides stable 14 V reference when reverse biased; polarity band identifies this terminal for correct PCB orientation |
Key Features
| Feature | Design Value |
|---|---|
| Pb-Free construction | RoHS-compliant packaging with G-suffix marking - meets global environmental compliance without solderability trade-offs |
| Tight voltage tolerance | ±5% zener voltage spread - reduces binning requirements and simplifies reference calibration in production |
| High surge resilience | 180 W non-repetitive surge rating at 8.3 ms - absorbs inductive kickback and lightning-induced transients without degradation |
| Low leakage at rated VR | ≤0.25 mA at 10.6 V - minimizes error in high-gain op-amp reference buffers and battery-powered sensor nodes |
| Wide temperature range | −65 °C to +200 °C operating envelope - enables use in under-hood automotive modules and downhole instrumentation |
Applications
| Automotive Engine Control Unit (ECU) Reference | Industrial PLC Analog Input Protection |
|---|---|
Use Scenario: Providing stable 14 V reference for microcontroller ADC voltage scaling and sensor excitation in engine management systems. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to clamp and regulate reference rail voltage. Use Value: Maintains <±1% reference accuracy across −40 °C to +125 °C ambient due to low tempco and tight initial tolerance. |
Use Scenario: Clamping input signal lines against 24 V field wiring surges in programmable logic controller analog modules. IC Role / Device Role / Timing Role: Standoff voltage limiter placed before precision op-amp front-end to prevent saturation or damage. Use Value: Absorbs 180 W transient energy per IEC 61000-4-4 without parameter shift, preserving measurement integrity. |
| Medical Instrumentation Power Sequencing | Telecom Line Card Overvoltage Clamp |
Use Scenario: Generating clean 14 V bias for photodiode transimpedance amplifiers in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-noise DC voltage reference source with minimal leakage-induced offset drift. Use Value: Delivers ≤0.25 mA leakage at 10.6 V, reducing input bias error in high-impedance sensing paths. |
Use Scenario: Protecting Ethernet PHY interface ICs from induced surges on long-distance copper traces. IC Role / Device Role / Timing Role: Fast-response shunt regulator activated during line fault events exceeding 14 V threshold. Use Value: Activates within nanoseconds to divert >10 A surge current, limiting downstream voltage to ≤14.7 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5351BRL | Same electrical specs but SnPb lead finish; no Pb-free marking | Acceptable where RoHS exemption applies or legacy assembly process requires tin-lead solder | Select only if Pb-free compliance is not mandated by end-market regulations or customer requirements |
| BZX85C15 | 15 V nominal, ±5%, 1.3 W power rating, DO-41 package | Lower power handling limits use to sub-1 W reference or clamp roles; unsuitable for sustained 5 W dissipation | Choose only for space-constrained designs where thermal mass and surge margin are secondary to footprint size |
Compared with 1N5351BRLG, 1N5351BRL lacks RoHS compliance and requires lead-free process validation, while BZX85C15 offers smaller form factor but sacrifices 74% of surge energy absorption and thermal headroom-making 1N5351BRLG the sole choice for high-reliability 5 W Zener regulation.
Availability
1N5351BRLG is available at Aetrix Electronics and suitable for automotive power management, industrial sensor conditioning, and telecom surge protection requiring stable component supply and full traceability.
Supply support for 1N5351BRLG includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
onsemi (formerly ON Semiconductor) is a global semiconductor supplier specializing in energy-efficient power, analog, sensor, and connectivity solutions for automotive, industrial, and cloud infrastructure markets.
The 1N53 Series belongs to onsemi's Surmetic™ 40 Zener regulator family, engineered for high-reliability voltage reference and transient suppression in harsh-environment applications demanding wide temperature operation and robust surge immunity.
FAQ
What is the exact zener voltage tolerance for 1N5351BRLG?
The 1N5351BRLG has a guaranteed zener voltage range of 13.3 V (minimum) to 14.7 V (maximum) at IZT = 2.5 mA, corresponding to a ±5% tolerance per JEDEC standard. This tolerance is verified during production testing and applies to every unit shipped, enabling predictable reference design without post-manufacturing sorting.
Can 1N5351BRLG be used in surface-mount designs?
No, the 1N5351BRLG is an axial-lead device in Case 017AA plastic package and is not compatible with SMT reflow processes. It requires through-hole mounting with minimum lead length of 25.4 mm and manual or wave soldering at 260 °C for 10 seconds at 1/16 inch from case. For SMT alternatives, consider the SMA封装 1SMA5922BT3G (14 V, 1.5 W).
What is the maximum continuous current the 1N5351BRLG can handle?
The maximum DC zener current (IZM) for 1N5351BRLG is 75 mA, calculated from PD/VZ = 5 W / 14 V ≈ 357 mA worst-case, but limited by datasheet specification to 75 mA at nominal 14 V. Exceeding this current risks thermal runaway due to positive tempco above 5 V, so design must include series resistance to enforce current limiting.
How does temperature affect the zener voltage of 1N5351BRLG?
The 1N5351BRLG exhibits a positive temperature coefficient of approximately +1.5 mV/°C near 14 V, meaning its zener voltage increases linearly with junction temperature. At 100 °C junction temperature, VZ rises by ~112 mV versus 25 °C baseline-critical for precision references where thermal management directly impacts regulation accuracy.
Is the 1N5351BRLG suitable for bidirectional transient protection?
No, the 1N5351BRLG is a unidirectional Zener diode optimized for reverse-bias regulation only. It conducts forward current like a standard diode (VF ≤ 1.2 V @ 1.0 A) but provides no clamping in forward direction beyond that drop. For bidirectional TVS protection, use dedicated devices such as SMAJ14A or P6KE15CA instead of 1N5351BRLG.
1N5351BRLG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 14 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 2.5 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 10.6 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 1 A
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
1N5351BRLG FAQ
1.How can I place an order for 1N5351BRLG through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5351BRLG on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 1N5351BRLG reliable?
The price and inventory of 1N5351BRLG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5351BRLG is usually 5 days.
3.What payment methods are accepted for 1N5351BRLG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5351BRLG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5351BRLG?
1N5351BRLG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5351BRLG order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 1N5351BRLG?
For technical support, including 1N5351BRLG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5351BRLG requirements.
6.How does Aetrix verify that 1N5351BRLG is sourced from the original manufacturer or authorized distributors?
All 1N5351BRLG products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 1N5351BRLG meets industry standards.
7.What is the process for return or replacement of 1N5351BRLG?
All 1N5351BRLG units undergo pre-shipment inspection (PSI). If there is an issue with 1N5351BRLG, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 1N5351BRLG part is unused and in its original packaging.
Return procedure for 1N5351BRLG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5351BRLG Tags
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MM5Z5V1ST1G
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